Stove.



No. 653,960. Patented July l7, I900. W. J. KEEP.

STOVE.

. (Applicabidn filed Apr. 18, 1899.) (No Model. 3 SheetsSheat WITNESSESINVENTOR {Aid/7m 60.26;...

af'. Jfifi? By QM 1 76 0469 Attorneys.

m: "cams mans o0, momma. WASNKNGTON, n. c.

Patented July l7, I900.

W. J. KEEP.

STOVE.

(Application filed Apr. 18, 1899.)

3 S heets-Sheet 2.

WITNESSES 64 a. )7-

INVENTOR 10%;, 11;!

Attorneys.

Patented .luly l7, I900. W. J. KEEP.

STOVE.

(Application filed Apr. 18, 1899.)

3 Sheets-Sheet 3,

(No Model.)

14 TNESSES '52; (5 WM lNl ENTOR Attorneys.

NiTEn STATEs PATENT QErIcE.

WILLIAM J. KEEP, OF DETROIT, MICHIGAN.

STOVE.

SPECIFICATION forming part of Letters Patent No. 653,960, dated July 17,1900.

Application filed April 18, 1899.

T0 to whom, it ntay concern:

Be it known that LWVILLIAM J. KEEP, a citizen of the United States,residing at Detroit,

county of \Vayne, State of Michigan, have invented a certain new anduseful Improvement in Stoves; and I declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same,reference being had to the accompanying drawings, which form a part ofthis specification.

This invention relates to base burning stoves, and has for its objectthe production of an improved base -burning stove which shall burn softcoal, slack, lignite, and fuel of that character in a satisfactorymanner.

In the drawings, Figure 1 shows a side elevation of a stove embodying myinvention, partly broken away to show the construction of the fire-potand the construction of the upper end of the magazine. Figs. 2, 3, 9,and 10 are detail views showing the construction of the joint betweenthe lower edge of the forward wall of the magazine and the rear wall ofthe fire-flue. Fig. at is a side elevation, partly in section. Fig. 5 isa front elevation, partly in section, the fire-flue being broken away.Fig. 6 is a horizontal section on the line 00 0c of Fig. 1. Fig. 7 is avertical section on the line y y of Fig. 6. Fig. 8 is a view similar toFig. 7, except that the pieces constituting the joint between the loweredges of the magazine and fire-flue are removed.

A indicates the base of the stove, provided with the usual doors forentrance to the ashpit a.

B indicates the fire-pot section, which is a simple round sectionsmaller at the bottom than at the top and of sufficient volume so that asolid body of incandescent coke shall be maintained in it withoutadmitting a materially-greater flow of air through one part thananother, and so that the stove may be relied upon to maintain a firewithout attention for twenty four hours or more. The volume of afire-pot for burning coal of a given size consisting, substantially, ofcarbon has been determined by experience. It should be greater, however,for coke than for anthracite coal usually used in stoves, because thepieces of the former are apt to be of irregular Serial No. 713,44. (Nomodel.)

size and some of them large. In the construction shown the fire-potsection is without the usual inclosed fire-pot, the walls of the stoveforming the fire-pot.

g is a horizontal grate of an appropriate construction located at thelower end of the fire-pot 13. Above the fire-pot section rests themagazine 13', and fire-flue section 0. This section is a continuouscylinder at its lower end where it rests uponthe fire-pot section B buta short distance above the fire-pot, at the sides, the walls of themagazine B and fire-flue section O are turned in and extend across abovethe fire-pot, so as to form a cylindrical magazine B and a cylindricalfire flue G, leaving an air-spacej between the two, Figs. 1, 4, and 6.Flanges a at", extending horizontally into the airspace j, are formedalong the lower transverse edges of the mag azine B and fire-flue O. Thecross-section of the magazine B has an area three-fourths or more thatof the cross-section of the top of the fire-pot.

At the base of the magazine B is a chamber that is kept free from coalby means of the internal hangers or aprons a outside of which the casingof the stove is expanded somewhat and furnished with a door or doors K.This furnishes a passage on either side of the magazine, so that thefire can be readily reached through said doors without actuallydisturbing the mass of the coal directly at the bottom of the magazine.

The forward lower edge of the magazine B is connected with the lowerrear edge of the fire-flue by a bridge-wall. The bridge-wall is made upof three pieces, which may be inserted from the outside. The centerpiece a is provided with side flanges which rest upon flanges a a, andwith upper end flanges a a and lower end flanges a a which latter arerounded, so as to avoid obstructing the coal descending from themagazine. a is a notch in one of the side flanges of the center piece a.Said notch may fit over a log upon the body of the stove. The two endpieces I) b are shaped at their inner ends to fit between the endflanges a a of the center piece a, and their upper surfaces close thespace between the lower edges of the front wall of the maga- Zinc andthe rear wall of the fire-flue. Their outer ends are provided withflanges 12 which rest against the outside of the stove and are securedin place by bolts b or otherwise. The joint between the center piece aand the inner ends of the pieces Z) is adapted, as shown, to permit oflongitudinal expansion of the pieces composing the bridge-wall.

A chamber D at the top of the stove communicates with the smoke-flue f.

The top of the magazine is entirely separated from the dome by a plated, through which there is a slide-closed hole d for the admission offuel to the magazine. The fuel is fed into the magazine through a hopperh, that opens into an upper dome e, and the smoke-fiuefleads out fromthe fire-dome D;

At the base of the fire-flue O is a door E, which is provided with theusual mica panels. The mica may be protected from the heat and smoke byan inner lining of perforated metal.

F is a deflector-plate located beneath the door E and bending inwardrelative to said door.

G is a series of holes through the front of the fire-flue beneath thedoor E and above the junction of the deflector-plate F with the firefiuewalls. The plate F deflects the stream of hot gases from the door E, andits action in this regard is supplemented by streams of cold airentering through the holes G.

The bridge-Wall between the magazine and the fire-flue is subject toconsiderable variations of temperature, and is therefore constructed sothat its constituent parts may expand and contract without disturbingthe other parts of the stove, and the iron of which said bridge-wall iscomposed is subject to rapid deterioration because of the hightemperature and the sulfurous gases to which it is exposed. It istherefore made in separate parts, which may be easily removed and othersimilar parts substituted. The magazine is entirely separate from thefire-flue and is exposed to radiation from said flue only on one side,so that the gases are not expelled from the coal in said magazine. Thegases are expelled from the coal at the mouth of the magazine orsomewhat below said month by the heat from the incandescent coke in thefirepot, pass through said coke, and are mingled with air and burned inthe fire-flue, and the residualcoke drops down as the ashes are removedfrom the grate to maintain the solid body of glowing coke in thefire-pot.

By having a single fire-flue of small crosssection the surface of thefire at the lower end of said fine is always bright, and there issufficient air, so that the gas which is being gradually produced iscompletely burned as it enters said flue. By providing a large firepotand keeping the magazine cool a structure is secured in which the cokeis burned as fast as produced and does not accumulate and in which theproduction of gas is at a substantially-uniform rate.

What I claim is 1. In a stove of the kind described, in combination witha vertical magazine, and a vertical flame-chamber, a bridge-wall unitinga wall of the magazine, and a wall of the flamefiue, the support a, andthe sliding archpieces 19', substantially as described.

2. In a stove of the kind described, a fireflue 0, having its rear Wallextending transversely above the fire-pot and provided at its lower edgewith a rearwardly-extending flange a a magazine B, located back of saidfirefiue, O, and having its front wall extending transversely above thefire-pot and provided at its lower edge with a forwardly-extendingflange a and one or more pieces adapted to rest upon the flanges a, anda to form the bridge-wall, substantially as described. 3. In a stove ofthe kind described, a fireflue C, having its rear wall extendingtransversely above the fire-pot, a magazine B, located back of thefire-flue C, and having its front wall extending transversely above the

